Selvage uncurler attachments



July 28, 1964 J. E. WITTIG 3,142,107

SELVAGE UNCURLER ATTACI-MENTS Filed July 2, 1962 s Sheets-Sheet 1INVENTOR. JOHN E.W|TTIG ATTORNEY y 23, 1954' J.'E. WITTIG 3,142,107

- I SELVAGE UNCURLER ATTACHMENTS Filed July 2, 1962 SSheets-Shqet :s

W 5' mm ATTORNEY United States Patent ice 3,142,107 SELVAGE UNCURLERATTACHMENTS John E. Wittig, 190 Walnut St., Northvale, NJ. Filed July 2,1962, Ser. No. 206,997 9 Claims. (Cl. 2654) This application is acontinuation-in-part of my copending application Serial No. 54,177,filed September 6, 1960, and now abandoned.

The present invention relates generally to attachments suitable forunrolling or uncurling the rolled-in or curledin selvage edges of a rollof wet and/ or dry fabric prior to processing for drying and/ orfinishing, and it has particular relation to portable attachments thatmay be mounted in any convenient manner on opposite sides of alongitudinally moving strip of fabric for unrolling or uncurling itsrolled-in or curled-in side selvage edges.

In the treatment and finishing of rolls of wet and/or dry fabric, theselvage edges have a tendency to curl-in or roll-in, and it is theprimary object of the present invention to provide right-handed andleft-handed attachments for mounting on opposite sides of the movingstrip of fabric, which will not only efficiently, economically andexpediently unroll or uncurl said rolled-in or curled-in selvage edges,but will maintain them in a straight unrolled or uncurled position untilthey can be secured in conventional clip and/ or pin conveyors orbetween rollers embodied in conventional tentering and/ or finishingmachines.

There are presently many kinds of mechanical devices used to unroll oruncurl the selvage edges of a wet and/ or dry roll of fabric before itsdelivery to a clip and/ or pin chain conveyor of tentering and/orfinishing machines, to-wit: dull knife edges, two or three finger rollercombs, rotary brushes, etc. Such mechanical devices have manyobjectionable features, as for example, a tendency to leave marks in thefabric. They are expensive, heavy, cumbersome, diificult to install andrequire large amounts of space. They also require considerable power foroperation, and frequent attention for adjustments. All of theseobjectionable features have been obviated with the present invention.

An object of the present invention is to provide a simple, durable,light-Weight and inexpensive portable attachment, either right handed orleft handed, for mounting immediately in front of and adjacent to theclip or pin chain conveyor of a conventional tentering and/ or finishingmachine, said attachments being capable of unrolling or uncurling therolled-in or curled-in selvage edges of a roll of fabric and thenmaintaining such edges in a straight and unrolled or uncurled positionWithout leaving any marks thereon.

Another object of the invention is the provision of simple and easy toinstall portable attachments on opposite sides of a longitudinallymoving strip of fabric for unrolling or uncurling its rolled-in orcurled-in selvage edges, which attachments require very small operatingspace, little operating power and have no moving parts that are likelyto break down or require frequent adjustments.

A further object of the invention is to provide a suitable durable,light-weight and inexpensive attachment which utilizes a suction streamto unroll or uncurl the rolled-in or curled-in selvage edge incombination with a direct air blast to maintain said straightened,unrolled or uncurled edge until it can be secured in a conventional clipand/or pin chain conveyor.

Another object of the invention is to provide such attachments with anadjustable guide means for contacting the rolled-in or curled-in selvageedges of the fabric being processed whereby it may be kept in suitablealignment 3,142,107 Patented July 28, 1964 while passing through saidattachments without imparting friction to the moving fabric.

A further object of the invention is to provide such attachments with apassageway having clearance for unrolling or uncurling the rolled-in orcurled-in selvage edges and also separate channels for concentrating thesuction stream in a proper direction to the moving edge of the roll offabric regardless of whether the rolled-in or curled-in edge is on thetop or bottom side of the moving strip of fabric.

Another object of the invention is the provision of a novel and uniquemethod of treating the rolled-in or curled-in selvage edges tostraighten, unroll or uncurl the same, Which method consists of thecombination of a suction stream and an air blast, whereby the suctionstream unrolls or uncurls the selvage edges and the air blast serves tomaintain said edges unrolled or uncurled in the horizontal plane of themoving strip of fabric.

Other and further objects and advantages of the invention reside in thedetails of its construction, which result in simplicity, economy andefficiency, and which will be apparent from the following description,wherein a preferred embodiment of the invention is shown, referencebeing had to the accompanying drawings, forming a part hereof, whereinlike numerals indicate like parts, in which:

FIGURE 1 is a fragmentary top plan view of a moving strip of fabricwhose rolled-in or curled-in selvage edges are passing throughattachments mounted on opposite sides thereof, which attachments havebeen made in accordance with the present invention;

FIGURE 2 is a longitudinal elevational view taken substantially alongthe line 22 of FIGURE 1, looking in the direction of the arrows, andshowing the receiving end of a conventional pin chain conveyor whichpicks-up the straightened selvage edges of the moving strip of fabricfor delivery to the next operation;

FIGURE 3 is an enlarged top plan view of one of the attachments shown inFIGURE 1, the same being the attachment for unrolling or uncurling theright side of the moving strip of fabric when looking in the directionof movement of the roll being processed, as indicated by the arrow;

FIGURE 4 is a side elevational view of the attachment shown in FIGURE 3with directional arrows being added to show the direction of the flow ofair forming the suction stream and the air blast.

FIGURE 5 is an enlarged fragmentary longitudinal sectional view of theattachment shown in FIGURE 3, the same having been taken substantiallyalong the line 5-5 thereof, looking in the direction of the arrows;

FIGURE 6 is a slightly enlarged side elevational view. of the adjustableguiding means embodied in the attachment shown in FIGURE 3, the samehaving been taken substantially along the line 6-6 thereof, looking inthe direction of the arrows; and

FIGURE 7 is a slightly enlarged fragmentary vertical sectional view ofthe attachment shown in FIGURE 4, the same having been takensubstantially along the line 7-7 thereof, looking in the direction ofthe arrows.

Referring now to the drawings, and particularly to FIGURE 1 thereof,there is shown a fragmentary strip of fabric 10, which is moving fromleft to right as indicated by an arrow 11 across a conventionalsupporting surface, such as for example, the top of a Work bench, table,etc. (not shown). Mounted on opposite sides of said supporting surfacein any suitable manner (not shown) and in operating alignment with eachlongitudinal edge of the fabric strip 10 are spaced attachments 12 and14 made in accordance with the principles of the invention. Theseattachments 12 and 14 are capable of unrolling, uncurling or removingthe rolled-in or curledin edges 16 of their respective selvage edges 18and 20 as they are passing therethrough.

Referring now to FIGURE 2, it will be noted that the flattened,straightened, unrolledor uncurled selvage edges 18 and 20 of the movingstrip are engaged in the receiving end of a conventional endless clip orpin conveyor 22 for delivery to the next operation to be performed onthe fabric. 7

The attachments 12 and 14, both of which are shown in operating positionin FIGURE 1, have substantially corresponding parts. The attachment 12has been constructed for processing the selvage edge 18 on the rightside of the moving strip of fabric 10. The attachment 14 has beenconstructed for processing the selvage edge 20 on the left side of themoving strip of fabric 10. The attachments 12 and 14 are identicalexcept that the shape of the base plate, top plate and the position ofthe adjustable selvage edge guide means have been reversed. However, itis believed that a detailed description of the attachment 12 will beadequate for a complete understanding of the invention.

Referring now to FIGURES 3 and 4, there is shown in detail theattachment 12, which has a five sided base plate 26, having downwardlysloping sides 27, 28 and 29, and straight sides 39 and 31. The smoothrounded downwardly sloping surfaces of the sides 27, 28 and 29facilitate movement of the strip 10. The front side 27 of the base plate26 extends outwardly at a substantial angle, to-

wards the middle of the fabric strip 16 being processed, 9

said angle being approximately sixty degrees. This angle tends to causethe rolled-in or curled-in selvage edge to unroll or uncurl towards itsouter edge. The base plate 26 has a longitudinally extended depressedchannel 34 extending therethrough from its receiving side 27 to itsdischarge side 30 (see FIGURE 5). This channel 34 extends substantiallycontiguous with the inner or back side 31. The inlet 38 of the channel34 is provided with a flexible closure flap 49, which may be made ofrubber, plastic or any other suitable material. The flap 40 is mountedby a molding strip 42 that is, in turn, secured removably to the side 29of the base plate 26 by machine screws 44. The opposite or outlet 39 ofthe channel 34 is similarly provided with a flexible closure flap 48,which, in turn, is secured at its outer edge by an angular molding strip50 that is, in turn, secured removably to the base plate 26 by machinescrews 52. In this manner, it will be readily apparent that theseflexible flaps 48 and 48 may be removed and replaced when becoming wornor broken.

The base plate 26 also has a second depressed channel 60 extending alongsubstantially its transverse axis, which channel 60 is depressed belowthe base of the channel 34, and provides an unobstructed passageway foran air suction stream to pass under the moving fabric strip 10. Suchstream would, obviously, unroll or uncurl any rolled-in or curled-inselvege edge 16 that projects below the plane of the moving fabric strip10.

The attachment 12 also has a top plate 70, which corresponds in size andshape to the base plate 26, which is adapted to be mounted pivotally inspaced relation to the base plate 26 approximately the thickness of thecloth being processed. The top plate 70 has upwardly sloping sides 71,72 and 73, and straight sides 74 and 75. The top plate 70 has anindented channel 76 extending longitudinally thereof in substantialalignment with the channel 34 of the base plate 26 when the plates aresecured in their closed position, as best shown in FIGURE 5. The inlet78 of the channel 76 is provided with a flexible closure flap 80, whichoverlaps the closure flap 40, projecting upwardly from the base plate26. The closure flap 80 is releasably secured in position by a moldingstrip 82 secured removably to the side 71 of the top plate 70 by machinescrews 83. The opposite or outlet end 81 of channel 76 is similarlyprovided with a flexible closure flap 84, which is mounted by an angularmolding strip 86 that is secured removably to the edge 74 of the topplate '70 by machine screws 88. Thus, it will be apparent that theflexible flaps 8t) and 84 may be removed and replaced when becoming wornor broken.

The top plate 76 also has a second indented channel 89 extending alongsubstantially its transverse axis, which channel 89 is indented abovethe longitudinal channel 76, and provides an unobstructed passageway foran air sue tion stream to pass above the moving fabric strip 10. Such astream would obviously unroll, uncurl or remove any rolled-in orcurled-in selvage edge 16 that projects above the horizontal plane ofthe moving fabric strip 10.

Referring to FIGURE 4, the back edge 31 of the base plate 26 is weldedto the top edge of a depending flange plate 90, which, in turn, ismounted through vertical slots 91 (see FIGURE 7) to the lower edge of aback plate 92 by bolts 93. These slots 91 permit vertical ad justment ofthe base plate 26 to the top plate 70 so that the spacing therebetweenmay be increased or decreased depending upon the thickness or thinnessof the fabric being processed. Angular brackets 94 and 95 are mounted onthe front side adjacent the top edge'of the back plate 92 by machinescrews 97. Each of the brackets 94 and 95 are apertured axiallyhorizontally. The top plate 70 has welded thereto an upwardly extendingflange 99 of a length to fit slidably between said spaced brackets 94and 95. Each end of the flange 99 is provided with a reduced threadedtrunnion 161' and 162, which are journalled through apertures in thebrackets 95 and 94. The outer ends of the trunnions 101 and 102 arethreaded to receive suitable locking nuts 104 and 105. This constructionsecures pivotally and removably the top plate 70 to the back plate 92,whereby it can be swung upwardly and away from the base plate 26. Thispivotal movement makes it easy to lay-in the rolled-in or curledinselvage edge 16 of the fabric 10 through the attachment 12.

The angular side 27 of the base plate 26 is known as the receiving orincoming side over which the moving strip of fabric 10 enters theattachment 12. At the junction of the rear corner of the side 27 withthe back plate 92, there is provided a vertically extending guide means110, which consists of a roller 111, which is rotatably mounted on ashaft 112. The shaft 112 is journalled between the forwardly projectionarms 113 and 114 of a U-shaped bracket 115, which arms extend indifferent horizontal planes. The ends of the shaft 112, which projectbeyond the arms 113 and 114, are threaded for receiving fastening nuts116. The base of the bracket 115 is welded to the forward end of a bar118, having a series of spaced apertures therethrough. The bar 118projects through a tubular sleeve 122, which has its inner side weldedto the extending end of a vertically mounted bracket124. The bracket 124is secured to the back of the back plate 92 by machine screws 126. Theouter side of the sleeve 122 has a hollow cylindrically shaped housing127 welded thereto, which has a closed end 128 that is 'provided with'aconventional spring pressed detent 130, whose opposite projecting endmay be secured releasably in any one of the series of spaced apertures120. It will be obvious in this construction that the vertical rollerguide means 110 is rendered slidably adjustable along the bar 118, andmay be moved transversely of the longitudinal passageway extendingthrough the base plate 26 and top plate 70 for contact with therolled-in or curled-in selvage edge 16, which will vary from time totime with different widths and kinds of fabrics as some have a greatertendency to roll-in or curl-in than others. The guide roller means 110should be kept contiguous with the moving rolled-in or curled-in selvageedge 16 of the strip 10 for easier processing and better longitudinalalignment while passing through the attachment 12.

The back plate 92 is provided with a large rectangularly shaped centralaperture 134, which is in open communication and alignment with thechannel 60 in the base plate 26 and the channel 89 of the top plate 70.

A flange plate 136, having an aperture 138 therethrough that correspondsin size and shape to the aperture 134 in the back plate 92, is adaptedto be secured to the back of the back plate 92 by bolts 140. The flangeplate 136 has an integrally formed tubular connecting pipe 142, which,in turn, has its opposite end provided with a circular flange plate 144.The flange plate 144 provides means for securing the end of theconnecting pipe 142 to a source of an air suction stream. In thedrawings, the air suction stream source is shown built into theattachment and consists of a conventional electric vacuum cleanerhousing 146 and motor 148. The housing 146 and motor 148 are mounted onthe top side of the flange plate 144 by suitable machine screws 149.Obviously, the connecting pipe 142 could be connected directly to anoutside source of suction, in which event a conventional valve would berequired in the line to turn on and off the suction stream when desired.

The exhaust port 150 of the vacuum cleaner housing 146 is provided witha flexible tubular hose 152 extending therefrom, and the opposite freeend of said hose 152 is provided with a discharge nozzle 154, having anelongated discharge port 156 of a substantial length as compared to itsheight. Obviously, if the suction side of the attachments 12 and 14 wereto be connected to an industrial vacuum system, it will be necessarythen to connect the discharge nozzle 154 to an industrial air pressuresystem in order to secure the desired air blasts to maintain saidunrolled or uncurled selvage edges 16 flat and straightened. Of course,the connecting line from the industrial air pressure system to theattachments 12 and 14 would have to be equipped with a conventionalvalve for turning the air pressure on and off when desired.

In the illustrations shown, the motor 148 is connected through aconventional on and off switch 160 to an outside source of electricalpower through a conventional electric cord 162. Thus, the starting andstopping of the combination air suction stream and air blast may becontrolled at will with merely a flick of the switch 160.

In the operation of these attachments it will be apparent that they arecapable of use with any conventional textile tentering and/or finishingmachines or any other types of textile machines on which rolled-in orcurled-in selvage edges 16 have to be straightened by unrolling oruncurling along their opposite longitudinal sides 18 and 20 of themoving strip of fabric 10, and then maintained in their flat,straightened position until such selvage edges can be secured in aconventional clip or pin conveyor 22. These simple, inexpensive,light-weight, portable attachments 12 and 14 may be easily and quicklymounted on the supporting structure of any fabric processing bench ortable by means of conventional clamps (not shown) or other suitablemeans. They are light in Weight, easy to carry, require no adjustments,maintenance, etc. They use very little operating current since the onlymoving part is the conventional suction motor 148, which is so small andrequires so little electricity that it may be plugged into any standardelectric light outlet (not shown) through its connecting wire or cord162.

The selvage edges 18 and 20 of most fabrics have a tendency to roll-inor curl-in, as indicated at 16. Sometimes the roll-in or curl-in is onthe underside of the fabric strip 10 and at other times it is on the topside of the moving strip 10. It is shown in the drawings,

'6 for purposes of illustration, as only being on the top side of themoving strip 10.

It will be noted that when the base plate 26 and the pivotal top plate70 are in closed processing position, the depressed channel 34 of thebase plate 26 and the indented channel 76 of the top plate 70 are insubstantial Vertical alignment, forming between them one largepassageway extending longitudinally through the attachment from itsreceiving side to its discharge side. When the moving strip of fabric 10is properly positioned over the base plate 26, the curled-in orrolled-in selvage edge 16 should be substantially centered within thispassageway. There will be sufficient clearance both above and below theplane of the moving fabric strip 10 for easily and quickly unrolling oruncurling the rolled-in or curled-in selvage edge 16 whether it is aboveor below the fabric strip 10.

It will also be noted in FIGURE 5 that, when the plates 26 and 70 areclosed upon the selvage edge 16 of the moving fabric strip 10, thetransversely extending channel 60 in the base plate 26, which is open atits free outer end, extends under the moving strip 10 to provide a readyentrance for the incoming air forming the suction stream. Thetransversely extending channel 89 in the top plate 70, which is invertical alignment with the channel 60 in the base plate 26, is alsoopen at its outer free end and extends above the plane of the movingstrip 10 to provide an unobstructed entrance for the air forming theincoming suction stream. The air entering the open end of the channel 89in the top plate 76 will form the suction stream for unrolling oruncurling the rolled-in or curled-in selvage edge extending above themoving fabric strip 10. The flexible overlapping flaps 40 and 80 at thereceiving end 38, 78 of the attachment 12 will tend to press against theopposite sides of the incoming fabric strip 10 and prevent excessiveleakage of air into the attachment 12 through this end of thepassageway, which would tend to weaken the suction stream movingtransversely of the fabric strip 10. The corresponding flexibleoverlapping flaps 48 and 84 at the discharge end 39, 81 of theattachment 12 will likewise tend to press against the opposite sides ofthe outgoing moving fabric strip 10 and prevent excessive leakage of airinto the attachment 12 through this end of the passageway, which wouldfurther tend to weaken the air suction stream moving transversely of themoving fabric strip 10.

It will be recognized that there are many different kinds and types ofcloths and/or fabrics. Some are light, some are heavy, some are closewoven, some have an open weave and others are knitted. Each of thesecloths or fabrics will require a suction stream or an air blast ofdifferent pressure. Therefore, the vacuum system and the air blastsystem used must have a suitable range between 10/p.s.i. and /p.s.i. Anyconventional method of regulating such pressures will operatesatisfactorily with these attachments. Each fabric will have to betested to determine its proper operating pressure, since there are toomany variables involved to set forth in table form.

The attachments 12 and 14 shown in the drawings herein are illustratedin the most convenient form, but there will be installations where lackof space, etc. make it necessary to mount the fan motor below or to oneside of the spaced plates, and it may even be necessary to change oreliminate the angle of the several parts, but none of these changes willeffect the operations of the attachments. It will also be obvious thatthese attachments may be made of any suitable material, and, while itis'described as being'made principally of metal, it is obvious that theycan be made of wood, hard rubber, plastics or combinations thereof, asconditions may require.

When the fabric strip 10 is properly positioned within the attachment12, the receiving guide roller 111 should be moved intoa position whereit will contact or substantially contact the rolled-in or curled-inselvage edge 16. This may be done merely by withdrawing the detent 130against its spring pressure, which will in turn withdraw its lower endfrom one of the series of apertures 120 in the bar 118. The assembly isnow ready to be moved slidably along the bar 118 until the verticalroller 111 is in contact with the selvage edge 16. The detent 139 maynow be released and its spring action will force its lower end into theaperture 120 with which it has been aligned, whereupon its position isfixed until a further change is desired.

It will be noted that the receiving edges 27 and 71 of the fixed baseplate 26 and pivotal top plate 70 extend outwardly at an obtuse angle ofapproximately 60 degrees with respect to the curled selvage edge 16 ofthe moving strip of fabric Hi. This angular relationship has a tendencyto cause the curled selvage edge 16 to uncurl towards the outside, thusfacilitating its unrolling or uncurling. Although I have shown anddescribed in detail only one form which the invention may assume, itwill be readily apparent to those skilled in the art that manymodifications may be made therein without departing from the spiritthereof.

What I claim is:

1. An attachment of the class described comprising:

(a) a base plate and a top plate spaced vertically a distance sufiicientto permit a moving strip of fabric to pass therebetween,

(b) said plates extending in parallel planes and being closed only alongtheir inner sides,

(c) an intake port extending through said closed sides in opencommunication with the space between said plates,

(d) a suction source and an air blast source,

(6) means for connecting the intake port with said suction source,

(f) means for connecting said air blast source with a discharge nozzle,

(g) and means for starting and stopping said sources.

2. An attachment of the class described comprising:

(a) a base plate and a top plate spaced vertically a distance suflicientto permit a moving strip of fabric to pass therebetween,

(b) said plates extending in parallel planes and being closed alongtheir inner sides,

(c) an intake port extending through said closed sides in opencommunication with the space between said plates,

(d) a suction unit having an intake port and an exhaust port,

(e) means for connecting the intake port in said closed sides with theintake port of said suction unit,

(f) means for connecting said exhaust port of said suction unit with adischarge nozzle,

(g) and means for starting and stopping said suction unit.

3. An attachment of the class described comprising:

(a) a base plate and a pivotal top plate spaced vertically a distancesuflicient to permit a moving strip of fabric to pass therebetween,

(b) said plates extending in parallel planes when closed and beingclosed only along their inner sides,

(c) an intake port extending through said closed sides in opencommunication with the space between said plates,

(d) a suction unit having an intake port and an exhaust port,

(e) means for connecting the intake port in said closed sides with theintake port of said suction unit,

(1) means for flem'bly connecting said exhaust port of said suction unitwith a discharge nozzle,

(g) and means for starting and stopping said suction unit.

4. 'An attachment of the class described comprising: (a) a base plateand a top plate spaced vertically a distance sufficient to permit amoving strip of fabric t pass therebetween, (b) said plates extending inparallel planes and being closed alon their inner sides,

(0) said upper plate having an indented channel, and said lower platehaving a depressed channel, which channels form an enlarged longitudinalpassageway adjacent said closed sides to provide clearance between saidplates for a rolled-in selvage edge,

(d) an intake por-t extending through said closed sides in opencommunication with the enlarged passageway between said plates,

(e) a suction unit having an intake port and an exhaust port,

(7) means for connecting the intake port in said closed sides with theintake port of said suction unit,

(g) means for connecting said exhaust port of said suction unit with adischarge nozzle,

(11) and means for starting and stopping said suction unit.

5. An attachment of the class described comprising:

(a) a base plate and a pivotal top plate spaced vertically a distancesufficient to permit a moving strip of fabric to pass therebetween,

(b) said plates extending in parallel planes when closed and beingclosed only along their inner sides,

(c) said plates having an enlarged passageway extending therethroughadjacent said closed sides to provide clearance between said plates fora rolled-in selvage edge,

(d) flexible means mounted at opposite ends of said passageway forclosing the same on opposite sides of a moving strip of fabric passingbetween said plates,

(6) an intake port extending through said closed sides in opencommunication with the enlarged passageway between said plates,

(3) a suction unit having an intake port and an exhaust port,

(3) means for connecting the intake port in said closed sides with theintake port of said suction unit,

(h) means for connecting said exhaust port of said suction unit with adischarge nozzle,

(1') and means for starting and stopping said suction unit.

6. An attachment of the class described comprising:

(a) a base plate and a top plate spaced vertically a distance suflicientto permit a moving strip of fabric to pass therebetween,

(b) said plates extending in parallel planes and being closed only alongtheir inner sides,

(0) said plates having an enlarged passageway extending therethroughadjacent said closed sides to provide clearance between said plates fora rolled-in selvage edge,

(:1) guide means for engaging the rolled-in selvage edge of the movingstrip of fabric,

(2) an intake port extending through said closed sides in opencommunication with the enlarged passageway between said plates,

(f) a suction unit having an intake port and an exhaust port,

(g) means for connecting the intake port in said closed sides with theintake port of said suction unit,

(it) means for connecting said exhaust port of said suction unit with adischarge nozzle,

(i) and means for starting and stopping said suction runit.

7. An attachment of the class described comprising:

(a) a base plate and a top plate spaced vertically a distance sufiicientto permit a moving strip of fabric to pass therebetween,

(b) said plates extending in parallel planes and being closed only alongtheir inner sides,

(c) said plates having an enlarged passageway extending therethroughadjacent said closed sides to provide clearance between said plates fora rolled-in selvage edge,

(d) adjustable guide means for engaging the rolledin selvage edge of themoving strip of fabric,

(e) an intake port extending through said closed sides in opencommunication with the enlarged passageway between said plates,

(f) a suction unit having an intake port and an exhaust port,

(g) means for connecting the intake port in said closed sides with theintake port of said suction unit,

(h) means for connecting said exhaust port of said suction unit with adischarge nozzle,

(1) and means for starting and stopping said suction unit.

8. An attachment of the class described comprising:

(a) a base plate and a top plate spaced vertically a distance sufiicientto permit a moving strip of fabric to pass therebetween,

(b) said plates extending in parallel planes and being closed only alongtheir inner sides,

() said plates having an enlarged passageway extending therethroughadjacent said closed sides to provide clearance between said plates fora rolled-in selvage edge,

(d) guide means for engaging the rolled-in selvage edge of said movingstrip of fabric,

(e) an air intake port extending through said closed sides in opencommunication with the enlarged passageway between said plates,

(f) spaced air intake channels extending one each cross-wise of saidplates in open communication with said air intake port in said closedsides,

(g) a suction unit having an intake port and an exhaust port,

(h) means for connecting the air intake port in said closed sides withthe intake port of said suction unit,

(i) means for connecting said exhaust port of said suction unit with adischarge nozzle,

(j) and means for starting and stopping said suction unit.

9. An attachment of the class described comprising:

(a) a base plate and a pivotal top plate spaced vertically a distancesufficient to permit a moving strip of fabric to pass therebetween,

(b) said plates extending in parallel planes when closed and beingclosed only along their inner sides,

(0) said plates having an enlarged passageway extending therethroughadjacent said closed sides to provide clearance between said plates fora rolled-in selvage edge,

(d) adjustable guide means adjacent the receiving side of said platesfor engaging the rolled-in selvage edge of said moving strip of fabric,

(2) an intake port extending through said closed sides in opencommunication with the enlarged passageway between said plates,

(f) spaced air intake channels extending one each transversely of saidplates in open communication with said air intake port in said closedsides,

(g) flexible means mounted at opposite ends of said enlarged passagewayfor closing the same on opposite sides of said moving strip of fabricpassing between said plates,

(h) a suction unit having an intake port and an exhaust (i) means forconnecting the intake port in said closed sides with the intake port ofsaid suction unit,

(j) means for connecting said exhaust port of said suction unit with adischarge nozzle,

(k) and means for starting and stopping said suction unit.

References Cited in the file of this patent UNITED STATES PATENTS1,677,303 Smith July 17, 1928 1,701,472 Dinsomre Feb. 5, 1929 2,402,621Gifford June 25, 1946 2,674,023 Foley Apr. 6, 1954 2,747,250 Bramhall,et a1 May 29, 1956 FOREIGN PATENTS 506,270 Belgium Oct. 31, 1951

1. AN ATTACHMENT OF THE CLASS DESCRIBED COMPRISING: (A) A BASE PLATE ANDA TOP PLATE SPACED VERTICALLY A DISTANCE SUFFICIENT TO PERMIT A MOVINGSTRIP OF FABRIC TO PASS THEREBETWEEN, (B) SAID PLATES EXTENDING INPARALLEL PLANES AND BEING CLOSED ONLY ALONG THEIR INNER SIDES, (C) ANINTAKE PORT EXTENDING THROUGH SAID CLOSED SIDES IN OPEN COMMUNICATIONWITH THE SPACE BETWEEN SAID PLATES, (D) A SUCTION SOURCE AND AN AIRBLAST SOURCE, (E) MEANS FOR CONNECTING THE INTAKE PORT WITH SAID SUCTIONSOURCE, (F) MEANS FOR CONNECTING SAID AIR BLAST SOURCE WITH A DISCHARGENOZZLE, (G) AND MEANS FOR STARTING AND STOPPING SAID SOURCES.